RS-485 Digital Communications
Modline 5
109
Command Code = CC
Is one of the two alpha character command codes from the list below.
All the commands are detailed below.
Value = XXXXX
Is the value included with a Write message and reported in the Sensor reply.
The range of acceptable input value is given for each command code. If the
value is omitted, execution of the instruction will return
the present value
of
the parameter involved. If a value is included, execution of the instruction will
store the specified value to in the Sensor’s non-volatile memory.
Carriage return = <CR>
All messages are concluded with ASCII code CR, “Enter” on computer
keyboard.
6.5
Command Codes
6.5.1
Introduction
The Command Codes allow operation and setup of the Modline 5 Sensor similar to the Rear Panel
pushbuttons. Refer to the manual section referenced for configuration and operation information as
directed for each code.
The Command Codes have been separated into four categories as follows:
• Engineering Functions
• Analog Output Functions
• Head Functions
• Measurement Conditions and Alarms
If the command is fully recognized, the command will be echoed back as “#A0CCXXXXX<CR>”, where
XXXXX will be the value sent if the command sent parameters that changed something, or the current
setting, if no parameters were sent. If the parameters sent are out of range or otherwise not allowed, the
current setting will be returned.
The message format must be correct for the sensor to reply. If the “#A0” is followed by any number of
characters and a carriage return character is not received, the unit will not respond at all. If at least a
fragment of the command is received, but the command code is not recognized, a response of
“#a0cc?HUH?” will be returned.
6.6
Engineering Function Command Codes
KL
– Keyboard Lock (Read / Write)
Locks or unlocks the Sensor’s rear panel keyboard. When the keyboard is locked, all functions work
and can be viewed, but not changed, at the Sensor. The keyboard can also be locked and unlocked
from the Sensor rear panel. RS-485 Write commands are not locked out with this command.
Range: 0 or 1 (0 = Unlocked; 1 = locked)
MD
– Model Number (Read Only)
Returns the model number of the sensor.
Value: An eight character Model Number is returned.
UN
– Units Select (Read / Write) See Section 5.6
ENGR – Setup of Engineering Functions
important information when changing units.
Sets the temperature units the Sensor uses for measurement and display.
Range: 0 to 1 (0 = Fahrenheit) (1 = Celsius)
